Benthic diatoms attached much more on horizontal specimen than on vertical ones, they tend to settle onto the surface of the coatings that there are lots of micro-cracks in it.

• 底栖硅藻在水平放置涂层上的附着量远高于在竖立放置涂层上的附着量，并且更易于附着于表面存在微细缝隙的涂层上。